Visual quality objectives in Douglas-fir forests 
editor, Ronald W. Walters. 
 - Portland, Or.  Pacific Northwest Region, Forest Service  1991. 
 - 183 p.  col. ill.  24 cm. 
<br/><br/><label>LCCN: </label>doc92000673  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Douglas fir--United States.<br/>Forest Management--United States.